in the city at 100 miles an hour in a lamborghini. the sergeant later said he was just kidding, it was a joke but he has been assigned to administrative duty while internal affairs sorts it out a little bit. the chief promises swift and severe discipline if it all turns out to be true. and that sergeant is just months away from retiring, as well. >>> if you are using bart to do a little holiday shopping, thieves are targeting you. cbs 5 reporter cate caugiran explains the extra tool bart is adding to keep you safe if you are riding bart. >> reporter: bart is stepping up security as part of a safety campaign to make sure that holiday shoppers are aware and safe this holiday season. now, to let you know that bart police say crimes are on the rise around both oakland and san francisco stations during the season. last night bart partnered with oakland police, private and volunteer security guards. shoppers were offered escorts to their cars at the west oakland station. bart riders told us they have encountered some brazen attacks in the p